EP0922990A3 - Color display device - Google Patents

Color display device Download PDF

Info

Publication number
EP0922990A3
EP0922990A3 EP98123568A EP98123568A EP0922990A3 EP 0922990 A3 EP0922990 A3 EP 0922990A3 EP 98123568 A EP98123568 A EP 98123568A EP 98123568 A EP98123568 A EP 98123568A EP 0922990 A3 EP0922990 A3 EP 0922990A3
Authority
EP
European Patent Office
Prior art keywords
light
light guiding
end surface
disposed
primary colors
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98123568A
Other languages
German (de)
French (fr)
Other versions
EP0922990B1 (en
EP0922990A2 (en
Inventor
Masaya c/o Bright Lab. Co. Ltd. Okita
Yasuo Aritake
Kohei Matsuyama
Masaya Kimura
Kazunari Matsui
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunet Display Tech Inc
Original Assignee
Ichikoh Industries Ltd
Bright Lab Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP34157797A external-priority patent/JP3786773B2/en
Priority claimed from JP34157697A external-priority patent/JP3831099B2/en
Application filed by Ichikoh Industries Ltd, Bright Lab Co Ltd filed Critical Ichikoh Industries Ltd
Publication of EP0922990A2 publication Critical patent/EP0922990A2/en
Publication of EP0922990A3 publication Critical patent/EP0922990A3/en
Application granted granted Critical
Publication of EP0922990B1 publication Critical patent/EP0922990B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133621—Illuminating devices providing coloured light
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0235—Field-sequential colour display

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Liquid Crystal (AREA)
  • Planar Illumination Modules (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

A color display device has a single light guiding plate, and first, second and third light sources that respectively independently exhibit three primary colors. On a one end surface of the light guiding plate there are disposed the first and second light sources that exhibit two different ones of the three primary colors. On the other end surface side of the light guiding plate there is disposed the third light source that exhibits the remaining one primary color. Since the light guiding means is needed only one in number, the structure can be simplified and miniaturized. Also, on the one end surface of the light guiding means there are disposed, of the three light sources exhibiting the three primary colors, the first and second light sources that exhibit two different ones of the three primary colors. And, on the other end surface side of the light guiding means there is disposed the third light source that exhibits the remaining one primary color. Therefore, the probability that the light which enters into the light guiding means from one light source is hindered by another light source decreases. Accordingly, the loss of the light becomes lessened and the amount of light emission increases.
EP98123568A 1997-12-11 1998-12-10 Color display device Expired - Lifetime EP0922990B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP34157697 1997-12-11
JP34157797A JP3786773B2 (en) 1997-12-11 1997-12-11 Color display device
JP34157697A JP3831099B2 (en) 1997-12-11 1997-12-11 Color display device
JP34157797 1997-12-11

Publications (3)

Publication Number Publication Date
EP0922990A2 EP0922990A2 (en) 1999-06-16
EP0922990A3 true EP0922990A3 (en) 1999-06-30
EP0922990B1 EP0922990B1 (en) 2008-07-23

Family

ID=26576995

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98123568A Expired - Lifetime EP0922990B1 (en) 1997-12-11 1998-12-10 Color display device

Country Status (7)

Country Link
US (1) US6181391B1 (en)
EP (1) EP0922990B1 (en)
KR (1) KR100432434B1 (en)
CN (1) CN1121111C (en)
CA (1) CA2255578C (en)
DE (1) DE69839759D1 (en)
TW (1) TW394916B (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6559826B1 (en) * 1998-11-06 2003-05-06 Silicon Graphics, Inc. Method for modeling and updating a colorimetric reference profile for a flat panel display
DE19858810A1 (en) * 1998-12-21 2000-06-29 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Flat lighting device and operating method
JP4558874B2 (en) * 1999-12-17 2010-10-06 ティーピーオー ホンコン ホールディング リミテッド Lighting device for display device
JP2002169152A (en) * 2000-11-29 2002-06-14 Nec Corp Liquid crystal display
KR100794303B1 (en) * 2001-05-14 2008-01-11 삼성전자주식회사 Automatic brightness control apparatus of liquid crystal display module for reducing power consumption and control method of the same
DE10065728B4 (en) * 2000-12-29 2009-04-23 Robert Bosch Gmbh Backlight device and liquid crystal display and their use in a motor vehicle
JP2003123502A (en) * 2001-10-17 2003-04-25 Advanced Display Inc Surface light source device, liquid crystal display device using it, and method for inspecting liquid crystal display device
US20050156839A1 (en) * 2001-11-02 2005-07-21 Webb Homer L. Field sequential display device and methods of fabricating same
TW200302948A (en) * 2002-01-31 2003-08-16 Kazuo Kohno Backlight lighting unit
US20040008296A1 (en) * 2002-07-12 2004-01-15 Durel Corporation Quasi color LCD
TW585983B (en) * 2002-08-13 2004-05-01 Quanta Display Inc Backlight module
TW575185U (en) * 2002-11-15 2004-02-01 Hon Hai Prec Ind Co Ltd Backlight system and light guide plate thereof
KR100918652B1 (en) * 2003-02-28 2009-09-22 엘지디스플레이 주식회사 Liquid crystal display module
JP2005107181A (en) * 2003-09-30 2005-04-21 Sony Corp Back light device, and liquid crystal display
JP2005331565A (en) * 2004-05-18 2005-12-02 Seiko Epson Corp Illumination device, liquid crystal display device, and electronic device
TW200700834A (en) * 2005-06-24 2007-01-01 Innolux Display Corp Light guiding plate and backlight module using the same
TWI428645B (en) * 2008-06-30 2014-03-01 Cpt Technology Group Co Ltd Color light guide panel and liquid crystal display device
US20140028955A1 (en) * 2011-04-22 2014-01-30 Sharp Kabushiki Kaisha Backlight unit and display device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4958911A (en) * 1988-10-19 1990-09-25 Jonand, Inc. Liquid crystal display module having housing of C-shaped cross section
US5039207A (en) * 1988-07-15 1991-08-13 Thorn Emi Plc Liquid crystal display device with prismatic light transmitting member
JPH04186315A (en) * 1990-11-21 1992-07-03 Hitachi Ltd Liquid crystal display device
JPH09218406A (en) * 1996-02-13 1997-08-19 Buraito Kenkyusho:Kk Back light for liquid crystal display

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5667289A (en) * 1989-05-18 1997-09-16 Seiko Epson Corporation Background lighting apparatus for liquid crystal display
JPH05303017A (en) * 1992-04-27 1993-11-16 J Ii L Kk Production of surface light emitting light transmission panel by screen printing and coating
JPH06138459A (en) 1992-10-26 1994-05-20 Rohm Co Ltd Light source for plane display panel
JPH0772815A (en) * 1992-12-15 1995-03-17 Koito Mfg Co Ltd Liquid crystal display device
JP2000501858A (en) * 1996-09-23 2000-02-15 フィリップス エレクトロニクス ネムローゼ フェンノートシャップ Lighting device for flat panel image display

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5039207A (en) * 1988-07-15 1991-08-13 Thorn Emi Plc Liquid crystal display device with prismatic light transmitting member
US4958911A (en) * 1988-10-19 1990-09-25 Jonand, Inc. Liquid crystal display module having housing of C-shaped cross section
JPH04186315A (en) * 1990-11-21 1992-07-03 Hitachi Ltd Liquid crystal display device
JPH09218406A (en) * 1996-02-13 1997-08-19 Buraito Kenkyusho:Kk Back light for liquid crystal display

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 016, no. 511 (P - 1441) 21 October 1992 (1992-10-21) *
PATENT ABSTRACTS OF JAPAN vol. 097, no. 012 25 December 1997 (1997-12-25) *

Also Published As

Publication number Publication date
DE69839759D1 (en) 2008-09-04
CA2255578C (en) 2006-12-05
KR19990062962A (en) 1999-07-26
EP0922990B1 (en) 2008-07-23
KR100432434B1 (en) 2005-01-13
US6181391B1 (en) 2001-01-30
CA2255578A1 (en) 1999-06-11
CN1222028A (en) 1999-07-07
TW394916B (en) 2000-06-21
CN1121111C (en) 2003-09-10
EP0922990A2 (en) 1999-06-16

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